Han "Casy" Dong Wook is a former StarCraft progamer from South Korea who played Terran for Air Force ACE. He used to play in amateur leagues.
 Casy was a member of OGN SparkyZ, formally known as KOR. He entered the proscene in 2003. He was a very strong Terran user known for his brilliant micro and creativity, to the point that he has been called the "Neo Emperor", a reincarnation of the legendary SlayerS_`BoxeR`. He shows many resemblances to BoxeR, as they both have a strong TvZ and a weak TvP.
He won one OSL, the 2006 Shinhan Bank OSL Season 1, defeating ChoJJa in the finals at a score of 3-1. Other achievements include placing 4th in the ShinHan2005 OSL, losing to iloveoov in the semifinals 3-2 and Pusan in the 3rd/4th place match 3-0. He also placed 4th in the 2006 Shinhan Bank OSL Season 3, losing to NaDa in the semifinals 3-2 and Iris in the 3rd/4th place match 3-0.
- Despite being hailed for his extremely good TvZ (57%) and TvT (45%), Casy's TvP has proven to be his achilles heel repeatedly. In total, his win rate is located at a depressing 25% with a 14-42 record.
|In Premier Tournaments|
|2007-03-17||3 - 4th||2007 Shinhan OSL Masters||1 : 3||sAviOr||$2,632|
|2007-02-21||4th||2006 Shinhan Bank OSL Season 3||0 : 3||Iris||$4,830|
|2006-06-23||1st||2006 Shinhan Bank OnGameNet Starleague Season 1||3 : 1||ChoJJa||$32,200|
|2006-02-28||4th||2005 Shinhan OSL||0 : 3||Pusan|
|Complete Results in any Tournament|
|1st||2004||KBC Power Game Show Newcomers' League|
| Shinhan2005 OSL
| Shinhan2006-1 OSL
23rd June 2006-18th November 2006
| Shinhan2006-2 OSL|
- Casy vs July on Reverse Temple, 2006-07 3rd Shinhan Bank OSL - Casy's Fake FE (Pimpest play)
- Casy vs Nada on Neo Arkanoid, 2006-07 3rd Shinhan Bank OSL - Nada's Marine/Medic Rush
- Casy vs Jy on Troy, OSC 2008 Season 1 - Casy nukerushes Jy into retirement